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So I went to go get my physical to make sure I was still fit enough to play baseball for my highschool. I didn't really expect anything, and I was perfectly healthy. But when I showed the doctor somes scars on my back that I've had since I could ever remember, he thought for a minute and then came back with a sheet of paper with some symptoms on it.

He then asked me to do all kinds of things, like touch my toes so he could...